Speaker



FIG. 1 is a front, top, right-side perspective view of a speaker showing my new design;

FIG. 2 is a rear, top, left-side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken line portions of FIGS. 2, 4, and 6 are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 